Method and apparatus for grant-free data transmission in wireless communication system

Abstract

A communication scheme and a system of converging an IoT technology and a 5 th generation (5G) communication system for supporting a higher data transfer rate beyond a 4 th generation (4G) system are provided. The communication scheme includes intelligent services (e.g. smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, and security and safety-related services), based on a 5G communication technology and an IoT-related technology. A method performed by a terminal in a communication system is provided. The method includes receiving, from a base station, a semi-persistent scheduling (SPS) configuration including an SPS configuration index; identifying at least one physical downlink shared channel (PDSCH) corresponding to the SPS configuration; identifying a PDSCH with a lowest SPS configuration index in case that the at least one PDSCH corresponding to the SPS configuration is overlapped in time in a slot; determining a PDSCH for data transmission based on excluding a PDSCH that is overlapped with the PDSCH with the lowest SPS configuration index from the at least one PDSCH; and receiving, from the base station, data based on the determined PDSCH, wherein the at least one PDSCH is not overlapped with a symbol indicated as an uplink in the slot.

What is claimed is: 
     
       1. A method performed by a terminal in a communication system, the method comprising:
 receiving, from a base station, a semi-persistent scheduling (SPS) configuration including an SPS configuration index; and 
 in case that at least two physical downlink shared channels (PDSCHs) associated with the SPS configuration are in a slot:
 performing reception of a PDSCH with a lowest SPS configuration index based on the SPS configuration index, 
 performing exclusion of the received PDSCH and at least one PDSCH that is overlapped with the received PDSCH from a set of PDSCHs within the slot, and 
 until the set of the PDSCHs is empty, repeating the reception and the exclusion. 
 
 
     
     
       2. The method of  claim 1 , wherein the SPS configuration further includes at least one of a periodicity, a number of hybrid automatic repeat request (HARQ) processes, a HARQ resource for a physical uplink control channel (PUCCH) for downlink SPS, or a modulation and coding scheme (MCS) table. 
     
     
       3. The method of  claim 1 , further comprising:
 transmitting, to the base station, HARQ information for the received PDSCH among the set of the PDSCHs. 
 
     
     
       4. The method of  claim 1 , further comprising:
 receiving, from the base station, downlink control information (DCI) including SPS activation information, 
 wherein the SPS configuration is received through higher layer signaling. 
 
     
     
       5. A method performed by a base station in a communication system, the method comprising:
 transmitting, to a terminal, a semi-persistent scheduling (SPS) configuration including an SPS configuration index; and 
 in case that at least two physical downlink shared channels (PDSCHs) associated with the SPS configuration are in a slot:
 performing transmission of a PDSCH with a lowest SPS configuration index based on the SPS configuration index, 
 performing exclusion of the transmitted PDSCH and at least one PDSCH that is overlapped with the transmitted PDSCH from a set of PDSCHs within the slot, and 
 until the set of the PDSCHs is empty, repeating the transmission and the exclusion. 
 
 
     
     
       6. The method of  claim 5 , wherein the SPS configuration further includes at least one of a periodicity, a number of hybrid automatic repeat request (HARQ) processes, a HARQ resource for a physical uplink control channel (PUCCH) for downlink SPS, or a modulation and coding scheme (MCS) table. 
     
     
       7. The method of  claim 5 , further comprising:
 receiving, from the terminal, HARQ information for the transmitted PDSCH among the set of the PDSCHs. 
 
     
     
       8. The method of  claim 6 , further comprising:
 transmitting, to the terminal, downlink control information (DCI) including SPS activation information, 
 wherein the SPS configuration is transmitted through higher layer signaling. 
 
     
     
       9. A terminal in a communication system, the terminal comprising:
 a transceiver; and 
 a controller coupled with the transceiver and configured to:
 receive, from a base station, a semi-persistent scheduling (SPS) configuration including an SPS configuration index, and 
 in case that at least two physical downlink shared channels (PDSCHs) associated with the SPS configuration are in a slot:
 perform reception of a PDSCH with a lowest SPS configuration index based on the SPS configuration index, 
 perform exclusion of the received PDSCH and at least one PDSCH that is overlapped with the received PDSCH from a set of PDSCHs within the slot, and 
 until the set of the PDSCHs is empty, repeat the reception and the exclusion. 
 
 
 
     
     
       10. The terminal of  claim 9 , wherein the SPS configuration further includes at least one of a periodicity, a number of hybrid automatic repeat request (HARQ) processes, a HARQ resource for a physical uplink control channel (PUCCH) for downlink SPS, or a modulation and coding scheme (MCS) table. 
     
     
       11. The terminal of  claim 9 , wherein the controller is further configured to transmit, to the base station, HARQ information for the received PDSCH among the set of the PDSCHs. 
     
     
       12. The terminal of  claim 9 ,
 wherein the controller is further configured to:
 receive, from the base station, downlink control information (DCI) including SPS activation information, and 
 
 wherein the SPS configuration is received through higher layer signaling. 
 
     
     
       13. A base station in a communication system, the base station comprising:
 a transceiver; and 
 a controller coupled with the transceiver and configured to:
 transmit, to a terminal, a semi-persistent scheduling (SPS) configuration including an SPS configuration index, and 
 in case that at least two physical downlink shared channels (PDSCHs) associated with the SPS configuration are in a slot:
 perform transmission of a PDSCH with a lowest SPS configuration index based on the SPS configuration index, 
 perform exclusion of the transmitted PDSCH and at least one PDSCH that is overlapped with the transmitted PDSCH from a set of PDSCHs within the slot, and 
 until the set of the PDSCHs is empty, repeat the transmission and the exclusion. 
 
 
 
     
     
       14. The base station of  claim 13 , wherein the SPS configuration further includes at least one of a periodicity, a number of hybrid automatic repeat request (HARQ) processes, a HARQ resource for a physical uplink control channel (PUCCH) for downlink SPS, or a modulation and coding scheme (MCS) table. 
     
     
       15. The base station of  claim 13 , wherein the controller is further configured to receive, from the terminal, HARQ information for the transmitted PDSCH among the set of the PDSCHs. 
     
     
       16. The base station of  claim 13 ,
 wherein the controller is further configured to transmit, to the terminal, downlink control information (DCI) including SPS activation information, and 
 wherein the SPS configuration is transmitted through higher layer signaling.